Grande’s tweet comes after sources close to her reportedly told TMZ that the singer was in hysterics following the incident, which is being investigated as a possible terror attack.

Dozens of musicians from around the world have also extended their condolences to those caught up in the incident, while police and emergency workers continue to look into what took place.

The Australian Government is urging anyone with concerns for the welfare of family and friends in Manchester to attempt to contact them directly, and if unsuccessful call the 24-hour phone line on 1300 555 135 (option 6), or +61 2 6261 3305 if overseas.